首页|Ala-CQDs/g-C3N4复合光催化剂的制备及其光催化性能研究

Ala-CQDs/g-C3N4复合光催化剂的制备及其光催化性能研究

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以尿素为前驱体,以葡萄糖、柠檬酸为碳源,L-丙氨酸为氮源,通过水热法制备出不同质量比的AC/CN复合光催化剂.通过XRD、UV-Vis、FT-IR和荧光对复合光催化剂的晶相结构、光吸收特性、结构组成及光学性质进行了表征,并研究了其在可见光下对亚甲基蓝的降解活性.实验表明:AC/CN复合光催化剂相较于纯相CN提高了对可见光的利用率,并且有效地抑制了载流子空穴复合效率,提高了催化活性,当AC和CN的质量比为1∶3时表现为最佳光催化性能——可见光照射120 min后,AC/CN复合光催化剂对亚甲基蓝的总降解率达到43%,是纯相石墨相氮化碳光降解率的1.96倍.
Study on the Modification of Ala-CQDs/g-C3N4 and Its Photocatalytic Properties
AC/CN composite photocatalysts with different mass ratios were prepared by hydrothermal method using urea as precursor,glucose and citric acid as carbon source and L-alanine as nitrogen source.XRD,UV-Vis,FT-IR and fluorescence were used to characterize the crystal structure,light absorption properties,structure composition and optical properties of the composite photocatalyst,and the degradation rate of methylene blue was investigated under visible light.The experimental results show that the AC/CN composite photocatalyst has higher utilization rate of visible light and can effectively inhibit the carrier hole recombination efficiency compared with pure CN thus improving the photocatalytic activity.When the mass ratio of AC and g-C3N4 is 1∶3,the photocatalyst performance is the best.After visible light irradiation for 120 min,the total degradation rate of methylene blue by AC/CN composite photocatalyst reached 43%which was 1.96 times that of pure graphite carbon ni-tride photocatalytic effect.

Graphite Phase Carbon Nitride/Carbon Quantum DotVisible Light CatalysisOrganic Pollutant Degradation

靳爱玲、孙苏婉、时凯歌、杨明铭

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郑州师范学院 化学化工学院,河南 郑州 450044

石墨相氮化碳/碳量子点 可见光催化 有机污染物降解

2024

云南化工
云南省化工研究院 云天化集团有限责任公司 云南煤化工集团有限公司 云南省化学化工学会

云南化工

影响因子:0.272
ISSN:1004-275X
年,卷(期):2024.51(11)